I am too tired to make any kind of intelligent post, I had a loooong day, but my great triumph was a bash script that tells me the number of minutes until the next bus leaves, from home and from campus, and that updates every 60 seconds. That was actually not too difficult, now that I'm getting a feel for bash, although it did of course take me a ridiculously long time to write.
The hard part, theoretically, is getting it to display in the panel instead of having to be run in the terminal. I was half hoping and half fearing that I would have to write the code myself, for which I had absolutely no idea where to start, but I at last stumbled across a piece of software someone else had written that would do the job. Then it was just a matter of converting the format of the script I'd written into something I could plug into the program. It's now as automatic as the clock and the temperature, I don't have to do anything to run it.
The result is here:
My quest to be able to hold my head up among computer geeks carries on.